| Location | Type | Area/District | City/LGA | State | Postcode |
|---|---|---|---|---|---|
| Omore | Facility | Isoko North | Delta | 332001 | |
| Osabai-Okpor-Camp | Rural | Okpe/Isoko | Isoko North | Delta | 334115 |
| Otar-Owhe | Facility | Isoko North | Delta | 334112 | |
| Oteri | Rural | Iyede | Isoko North | Delta | 334118 |
| Otibfo | Facility | Isoko North | Delta | 334002 | |
| Otibio | Rural | Owhe | Isoko North | Delta | 334112 |
| Otie | Rural | Owhe | Isoko North | Delta | 334112 |
| Otor | Rural | Owhe | Isoko North | Delta | 334112 |
| Otor-Iyede | Rural | Iyede | Isoko North | Delta | 334118 |
| Otovo-Camp | Rural | Ozoro | Isoko North | Delta | 334111 |
| Ovara | Rural | Emevor | Isoko North | Delta | 334116 |
| Oviri-Camp | Rural | Emevor | Isoko North | Delta | 334116 |
| Ovrode | Rural | Ofagbe | Isoko North | Delta | 334114 |
| Ovrode-Camp | Rural | Ellu | Isoko North | Delta | 334113 |
| Ovrpe | Rural | Ofagbe | Isoko North | Delta | 334114 |
| Oyaro | Rural | Emevor | Isoko North | Delta | 334116 |
| Ozoro | Rural | Ozoro | Isoko North | Delta | 334111 |
| Ubirioho-Camp | Rural | Emevor | Isoko North | Delta | 334116 |
| Ughusi-Camp | Rural | Ellu | Isoko North | Delta | 334113 |
| Ulli-Iyede | Rural | Iyede | Isoko North | Delta | 334118 |
